Oscillating motor.



No. 879,091. PATENTED FEB.11, 1908.

H. F. W. FALKENBBRG. OSCILLATING MOTOR.

APPLIOATION FILED 00T,12, 1906.

' 2 SHEETS-SHEET l.

UN ITED sTATEs PATENT oEEIc-E.

HEINRICH FRIEDRICH wILIIELM EALKENBERG; oEDoRTMUND, GERMANY.

I oscILLA'IG Moron SpeciicatirJn'ofIf-etters Patent. .Application nea omarmt. 190s. serial No. 338.678.

' Patented Feb. L1, 1908.

provements in OscillatingMotors, of whichthe following is; a specification. l

The invention has for its object distributversal of the distributing slide valve. compared with known devices, the'novelty consists in'the fact that `the distributing slide valve with itsreversing member is arranged ofA the 'slide valve into the obturatingposi- 'tion for' the admission of the water underl 2f) pressureA has beenellected by the impact of the .oscillating piston, andacts upon the reversing part of the slide valve whereby it is displaced into its end position.

ABy means of the invention, numerous ad vantages" are obtained. Owingto the fact thatv reversing members with springs are ldispensed with, the operation is renderedsimp'ler and morereliable.

A further advantage consistsin the Jfactthat the pressure medium acts completely up to the end of each stroke, so that in-.

creased eiciency is obtained. A good joint* forthe distributing gear is likewise obtained. The number of separate parts employed is.

small. All parts are readily interchangeable and easy to clean. This is a great advantage Afor the slide valve in order to prevent stopring up! i I A Jfurther important point is that sticking position and' in thisconnection it is quite immaterial whether the machine is loaded QUI ing means. for hydraulic machines with an loscillating piston which produces the re- As" in a special casing, into which the -water under pressure enters,l after a partial reversal of the distributing slide valve in its middle. position is effectuallyprevented- There ,isv the further possibilityof starting in every tion of the piston. y

The improvement is motor comprising. a cylindrical casing', provided with the usual cylindrical working chamber 2, and a Inotive fluid inlet 1.

Fig. 2. Figs. e and 5 represent a modica-- The shown applied to a piston 4 is provided with a hub y'27,.nhich` p in the -ilat faces of the casing and is encircled by the usual packing nuts, and the hub is secured on the shaftl 14 in the following extends .through upper -and lower openings man ner. The upper end of the hub is tapering and split as at 16,-'and anut provided witha hand wheel l5 is threaded on-to the tapered' and splitend. klt will be evident that by screwing up the nut, the-hub will be' tightened on'the shaft toany desired extent. Atone side of the working chamber as 'shown in Fig. 3, isy arranged a hollow abutment 21 radialof the chamber and extending cbetween the hub 27 andthe peripheral wall of the basing. The -ends of the abutment are .provided .with openings 25, through which are adapted to extend projections 26 on the opposite faces' of the piston 4f. when th'eplsaid piston is at the end of its stroke in each direction.

The `slide ,valve 5 is arranged to' slide on the floor 8 of the abutment, which Hoor is provided with Vthree passages, the central passage communicating with the exhaust 11 of the casing, and the side passages 22 and 22 discharging intothe working chamber 2l of the casing on opposite sides of the abutment as shown in Fig. 1. of the 'slide valve is provided with a seat or saddle 23,- received in a groove 24 in a piston 5 arranged above the slide valve and mov' ing therewith, this piston being adapted to move the slide valve by means to bel presentlydescrihed. 'i

The openings '25' before mentioned, are opposite the ends of the piston, as will be evident froinan inspection of Figfyand that part of the abutment between thev slide The upper surface valve piston and the hub` of the motor piston is provided with three-passages, a central passage 29 in communication with" the holx .ow 3l of the abutmentand the inlet open- Ing 1, and sIde passages 30 and SOieadng from the respective ends of the hollow of theA abutment toward the hub, and adapted to be connected with the central passage by grooves 28and 28 in the hub of the motor pistori"as shown in Fig. 3, when vthe said pis ton is incertain positions. f?

The operation is as ollows'z-When the motive fluid is admitted through the inlet to the working chamber of the motor, the pis- ,ton will be oscillated, and when it reaches the position shown in Fig.` 3, Vthe projection 26 will extend through the opening 25 and engage the adjacent end of the slide valve piston 5, thus slightly displacing said slide valve piston. At this time, the groove 28 connects the passage 30 with the passage 29, permitting the motive vfluid to pass through the passage 29, the groove `28 and the passage 30, to the space between the end of the' slide valve piston and the end of the abutment, and the motive iiuid forces the slide valve to the opposi-te side of the abutment, thus closing the communication between the inlet and the passage 22, and opening com. vmunication between the inlet and the pas-.

sage 22. This same movement connects the passage 22 with the exhaust 11 and disconnects the passage 22"whic h had previously been connected with the said exhaust.

The arrangement described may of course vary as desired, in its detail. The discharge passages for the pressure vmedium may be constructed dierently. Y In place of one dis- .chargepassage formed in theslide valv'e,

" hand wheel and the.piston shaft are coupled `iirst by the impact of the iston and then by- Ameans of the pressure me ium. The surface A which the distributing slide valve presents to with the"driven shaft The" construction of the auxiliary-piston 51v may differ Jfrom that here re resented in any desired manner. Again, t e casing and the arrangement of the passages in the casing may be modified as desired, without thereby necessarily aiiectin the principle of the invention. The essentia point is t at in all cases the reversal of the istributing slide valve .should take place the pressure medium must' be smaller than the surface ofthe position. The projections 26 of the piston 4 maybe provided With opentained in the casing 21 may ilow out through those openings 32, 33.

. Having now particularly described and ascertained the nature of my said invention, and-in what manner the same is performed, I declare that what I claim is:

l. In a motor rovided with an oscillating piston, and a sli e valve for controlling the motive fluid, of means in connection with the piston for slightly displacing said valve towardreversing position near the end of the oscillatory movement of the piston, and means whereby said displacement will admit the motive'fluid behind the valve to complete' the reversing movement of the valve.

2. In a motor provided with an oscillatingk piston, a slide valve for controlling the motive fluid, a hollow abutment in which the slide valve moves, a pistonmoving "with the slide valve in the abutment,` thel ends ofthe piston being adapted to contact with the end walls of the abutment, saidend walls being providedwith openings, projections on the motor piston adapted to extend throughsaid openings wherebyl to slightly displace said valve piston near the end of each'oscillation of the piston, and means whereby said displacement will admit the motive fluid behind the valve piston to complete the reversing movement ofthe valve. y

3. In a motor provided withan oscillating piston, and a slide valve for controlling the motive fluid, means in connection wit-hthe p iston for slightly displacing said valve towards reversing positionnear the end of each oscillation of the piston, and means whereby said displacement will cause'. the. motive lluidto complete, the reversing movement of the valve.

In testimony whereof I'havehereunto set my hand inpresence of two subscribing witnesses this lst-dayof October 1906.

HEINRICH FRIEDRICH EVILHELM FMJKENBERG.

Witnesses:

OTTO KNIG,. J. A. RITTERSHAUS.

Correction in Letters Patent No. 87909L It is hereby 4certified tht in Letters lvettentNo. 879,091, granted February 1l, 190,8,

upon the application of Heinrich Friedrich Wilhelm Falkenberg', of Dortmund, Germany, for an improvement in Oscillating Motors, einv error appears in the printed specification requiring correction, as follows: lIn line 55, page 2, the word position should read piston; and that/the said Letters Patent should be read'with this corrections therein thet the same may conform to the record of the case in the Patent Oice.

Signed and sealed this 28th day of April, D.,vl908.

[SEAL]` C. BlLLlNGS,

` Acting Commissioner of Potente. 

